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$380+ Cheap flights from Ontario (ONT) to Singapore

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Ontario to Singapore

Keep the following information in mind while searching for Ontario to Singapore flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$808
(Korean Air)

One-way from

$461
(ScholarTrip)

Popular in

December

Cheapest in

October

Average price

$1,097
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Singapore Changi flights.
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From Ontario to Singapore
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One-way flight from Ontario to Singapore
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Highest demand for flights based on searches. 8% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Ontario to Singapore

Cheapest flights from Ontario to Singapore
Explore the most affordable flight options available from Ontario to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Korean Air deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:00 amONT - SIN
2 stops31h 00mKorean Air
Wed 8/207:30 amSIN - ONT
2 stops24h 58mKorean Air
Deal found 4/30$738
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:00 amONT - SIN
2 stops25h 40mDelta
Wed 8/277:30 amSIN - ONT
2 stops30h 11mDelta
Deal found 4/29$803
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:00 amONT - SIN
1 stop21h 25mUnited Airlines
Tue 9/98:45 amSIN - ONT
1 stop26h 48mUnited Airlines
Deal found 4/30$865
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:00 amONT - SIN
2 stops27h 20mJapan Airlines
Sat 9/68:05 amSIN - ONT
2 stops25h 23mJapan Airlines
Deal found 4/30$891
This Gotogate deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:10 pmONT - SIN
1 stop22h 30mSTARLUX Airlines
Sat 9/272:00 pmSIN - ONT
1 stop18h 05mSTARLUX Airlines
Deal found 4/30$974
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1412:45 amONT - SIN
1 stop20h 50mChina Airlines
Mon 9/222:00 amSIN - ONT
1 stop31h 00mChina Airlines
Deal found 4/30$1,019
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1312:10 amONT - SIN
2 stops30h 05mMultiple Airlines
Wed 5/217:05 amSIN - ONT
2 stops25h 55mMultiple Airlines
Deal found 4/30$1,051
This oojo deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:39 amONT - SIN
2 stops30h 21mQatar Airways
Wed 9/246:45 pmSIN - ONT
2 stops44h 14mQatar Airways
Deal found 4/30$1,259

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Ontario

Fly to

Singapore

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 8/13

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Wed 8/20

7:30 am-5:28 pm

2 stops24h 58m

$738

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 8/11

7:00 am-11:40 pm

2 stops25h 40m

Singapore Changi

Wed 8/27

7:30 am-10:41 pm

2 stops30h 11m

$803

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 8/29

6:00 am-6:25 pm

1 stop21h 25m

Singapore Changi

Tue 9/9

8:45 am-8:33 pm

1 stop26h 48m

$865

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 8/24

6:00 am-12:20 am

2 stops27h 20m

Singapore Changi

Sat 9/6

8:05 am-6:28 pm

2 stops25h 23m

$891

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/15

11:10 pm-12:40 pm

1 stop22h 30m

Singapore Changi

Sat 9/27

2:00 pm-5:05 pm

1 stop18h 05m

$974

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 9/14

12:45 am-12:35 pm

1 stop20h 50m

Singapore Changi

Mon 9/22

2:00 am-6:00 pm

1 stop31h 00m

$1,019

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 5/13

12:10 am-9:15 pm

2 stops30h 05m

Singapore Changi

Wed 5/21

7:05 am-6:00 pm

2 stops25h 55m

$1,051

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/15

11:39 am-9:00 am

2 stops30h 21m

Singapore Changi

Wed 9/24

6:45 pm-11:59 pm

2 stops44h 14m

$1,259

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 9/3

7:00 am-11:40 pm

2 stops25h 40m

$380

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 10/21

6:30 pm-6:15 am

1 stop20h 45m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 19 results
1
2

Best time to book a flight from Ontario to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Singapore

What is the cheapest month to book a flight from Ontario to Singapore?

Currently, September is the cheapest month in which you can book a flight from Ontario to Singapore (average of $1,011). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SG?

Find hourly flight availability from Ontario to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Singapore as you normally would.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated May 1, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air from Ontario to Singapore. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Singapore?

    If you book a flight to Singapore from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from Ontario to Singapore one-way?

    One-way options have recently been found by users for as low as $461 on Korean Air. Other airlines that offer cheap prices include Japan Airlines from $473 and United Airlines from $491 one-way.

  • Can I find deals for flights from Ontario to Singapore that include hotel bookings?

    Yes. In addition to deals on Ontario to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Singapore.

  • Can I find deals for business class flights from Ontario to Singapore?

    Yes. Cheapflights offers flight deals from Ontario to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Singapore?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Singapore (average of $1,011). Flying from Ontario to Singapore in December is currently the most expensive (average of $1,684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Ontario to Singapore

Discover the top 2 airlines that operate flights from Ontario to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$887Average$1,336FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$966Average$1,064FlexibilityNo cancel feeOn-time70%

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